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Half-Life 2: Episode One

Wishlist Follow Ignore Launch Unwatch Watch
App ID 380
App Type Tool
Developer
Publisher Valve
Franchise Half-Life
Supported Systems Windows macOS Linux
Technologies Source Engine
Last Changenumber 37431479
Last Record Update 21 July 2026 – 23:11:26 UTC ()
Release Date 1 June 2006 – 07:00:00 UTC ()
😍 93.79%
31k reviews
6
In-App
+12

Half-Life 2 has sold over 4 million copies worldwide, and earned over 35 Game of the Year Awards. Episode One is the first in a series of games that reveal the aftermath of Half-Life 2 and launch a journey beyond City 17. Also features two multiplayer games. Half-Life 2 not required.

Additional Information

Developer Valve
metacritic_url pc/halflife2episodeone
gamedir episodic
metacritic_name Half-Life 2: Episode One
icon steam/games/icon_hl2
controller_support full
icon2 steam/games/icon_hl2_dull
metacritic_score 87
NoServers Yes
metacritic_fullurl https://www.metacritic.com/game/pc/half-life-2-episode-one?ftag=MCD-06-10aaa1f
primarycache 381
dependantOnApp Half-Life 2 (220)
state eStateAvailable
ValidOSList macOS Windows
developer_url http://www.valvesoftware.com/
community_visible_stats Yes
directx_minver 4.09.00.0903
sourcegame Yes
Supports64bit No
Publisher Valve
Store Release Date 1 June 2006 – 07:00:00 UTC ()
osarch empty string
Primary Genre Action (1)
Store Genres Action (1)
Steam Release Date 1 June 2006 – 07:00:00 UTC ()
Store Asset Modification Time 23 April 2025 – 00:35:49 UTC () (1745368549)
library_assets
library_capsuleen
library_heroen
library_logoen
logo_position ↴
pinned_positionBottomLeft
width_pct70
height_pct33
osextended empty string
review_score 9
review_percentage 95
Detected Technologies Source Engine, Autodesk_FBX SDK, Bink_Video SDK, CEF SDK, Miles_Sound_System SDK, SDL SDK
Steam Deck Compatibility
  • Steam Deck:
  • This game has minor audio issues on Steam Deck
  • All functionality is accessible when using the default controller configuration
  • This game shows Steam Deck controller icons
  • In-game interface text is legible on Steam Deck
  • This game's default graphics configuration performs well on Steam Deck
  •  
  • SteamOS:
  • This game runs successfully on SteamOS
  • Note: This game has minor audio issues on SteamOS
  •  
  • category: Playable
  • steamos_compatibility: Compatible
  • steam_machine_compatibility: 0
  • test_timestamp: 26 February 2022 – 00:00:00 UTC
  • tested_build_id: 8270643
  • steam_machine_tests:
  • configuration:
    supported_inputgamepad
    requires_manual_keyboard_invoke0
    requires_non_controller_launcher_nav0
    primary_player_is_controller_slot_00
    non_deck_display_glyphs0
    small_text0
    requires_internet_for_setup0
    requires_internet_for_singleplayer0
    recommended_runtimenative
    requires_h2640
    requires_voice_files0
    gamescope_frame_limiter_not_supported0
    hdr_support0
    requires_proton_soundfonts0
deckresolutionoverride Native
controllertagwizard Yes
First seen on SteamDB 20 March 2013 – 07:42:04 UTC (), in changelist #196282

Supported Languages

18 Languages Interface Full Audio Subtitles Achievements
English Yes Yes Yes
French Yes Yes Yes
German Yes Yes Yes
Italian Yes Yes Yes
Korean Yes Yes Yes
Spanish - Spain Yes Yes Yes
Russian Yes Yes Yes
Simplified Chinese Yes Yes Yes
Traditional Chinese Yes Yes Yes
Dutch Yes Yes
Danish Yes Yes
Finnish Yes Yes
Japanese Yes Yes
Norwegian Yes Yes
Polish Yes Yes
Portuguese - Portugal Yes Yes
Swedish Yes Yes
Thai Yes Yes

Categories

Single-player Steam Achievements Captions available Steam Cloud Stats Includes Source SDK Commentary available Family Sharing HDR rendering

Hardware Categories

Full Controller Support DualShock Controllers (USB Only) DualShock Controllers DualSense Controllers (USB Only) DualSense Controllers Steam Input API Supported

Accessibility Categories

Camera Comfort Custom Volume Controls Stereo Sound Surround Sound Playable without Timed Input Adjustable Difficulty Save Anytime

Assets

Load all asset images
clienticon dddaffd2724873ff767b211b26f17c822c3eea30
clienttga f1f5ca656a5257166ea447a7beef62736f4dec3e
icon 795e85364189511f4990861b578084deef086cb1
logo b5a666a961d8b39896887abbed3b78c2b837c238
logo_small 6bfe1cfa3029197eff38295363dc8918aba095dc
clienticns 437247596adf248dfd79202b8d8a7a0ffd70551c
LinuxClientIcon 4a75609ae32a548e85ec58ced4b17ae38f1547ea
small_capsule
englishcapsule_231x87.jpg
header_image
englishheader.jpg
library_assets_full
library_capsule ↴
image/englishlibrary_600x900.jpg
image2x/englishlibrary_600x900_2x.jpg
library_hero ↴
image/englishlibrary_hero.jpg
library_logo ↴
image/englishlogo.png
logo_position/pinned_positionBottomLeft
logo_position/width_pct70
logo_position/height_pct33
Assets
small_capsulecapsule_231x87.jpg
headerheader.jpg
hero_capsulehero_capsule.jpg
library_capsulelibrary_600x900.jpg
library_capsule_2xlibrary_600x900_2x.jpg
library_herolibrary_hero.jpg
community_icon795e85364189511f4990861b578084deef086cb1.jpg
page_background_pathapp/380
last_modified23 April 2025 – 00:35:53 UTC
timestamp23 April 2025 – 00:35:53 UTC

Trailer 293 ↴

trailer_name Half-Life 2: Episode One Trailer
trailer_category 0
microtrailer ↴
video/webm 380/293/6a9f72900fb6c9161e01f8344712153f6bc23ce9/1751245929/microtrailer.webm
video/mp4 380/293/6a9f72900fb6c9161e01f8344712153f6bc23ce9/1751245929/microtrailer.mp4
adaptive_trailers ↴
dash_av1 380/293/6a9f72900fb6c9161e01f8344712153f6bc23ce9/1751245929/dash_av1.mpd
dash_h264 380/293/6a9f72900fb6c9161e01f8344712153f6bc23ce9/1751245929/dash_h264.mpd
hls_h264 380/293/6a9f72900fb6c9161e01f8344712153f6bc23ce9/1751245929/hls_264_master.m3u8
all_ages true
is_highlight true
timestamp 12 November 2015 – 17:54:06 UTC

Trailer 314 ↴

trailer_name HL2:EP1 Launch Teaser 1
trailer_category 0
microtrailer ↴
video/webm 380/314/a4c4f776e4c70656f3cbe0fc24998c792faaf746/1751245929/microtrailer.webm
video/mp4 380/314/a4c4f776e4c70656f3cbe0fc24998c792faaf746/1751245929/microtrailer.mp4
adaptive_trailers ↴
dash_av1 380/314/a4c4f776e4c70656f3cbe0fc24998c792faaf746/1751245929/dash_av1.mpd
dash_h264 380/314/a4c4f776e4c70656f3cbe0fc24998c792faaf746/1751245929/dash_h264.mpd
hls_h264 380/314/a4c4f776e4c70656f3cbe0fc24998c792faaf746/1751245929/hls_264_master.m3u8
all_ages true
timestamp 4 December 2017 – 18:12:20 UTC

Trailer 315 ↴

trailer_name HL2:EP1 Launch Teaser 2
trailer_category 0
microtrailer ↴
video/webm 380/315/ad3cd53aff35df5ee587c5919f26e25da56188be/1751245929/microtrailer.webm
video/mp4 380/315/ad3cd53aff35df5ee587c5919f26e25da56188be/1751245929/microtrailer.mp4
adaptive_trailers ↴
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hls_h264 380/315/ad3cd53aff35df5ee587c5919f26e25da56188be/1751245929/hls_264_master.m3u8
all_ages true
timestamp 4 December 2017 – 18:12:29 UTC

Trailer 316 ↴

trailer_name HL2:EP1 Launch Teaser 3
trailer_category 0
microtrailer ↴
video/webm 380/316/e2b4e7c324f7c614384a44778f47b0febb931160/1751245929/microtrailer.webm
video/mp4 380/316/e2b4e7c324f7c614384a44778f47b0febb931160/1751245929/microtrailer.mp4
adaptive_trailers ↴
dash_av1 380/316/e2b4e7c324f7c614384a44778f47b0febb931160/1751245929/dash_av1.mpd
dash_h264 380/316/e2b4e7c324f7c614384a44778f47b0febb931160/1751245929/dash_h264.mpd
hls_h264 380/316/e2b4e7c324f7c614384a44778f47b0febb931160/1751245929/hls_264_master.m3u8
all_ages true
timestamp 4 December 2017 – 18:12:39 UTC

Trailer 317 ↴

trailer_name HL2:EP1 Launch Teaser 4
trailer_category 0
microtrailer ↴
video/webm 380/317/f048d2969ab486ae10ea38790e41f676cf0ea1c9/1751245929/microtrailer.webm
video/mp4 380/317/f048d2969ab486ae10ea38790e41f676cf0ea1c9/1751245929/microtrailer.mp4
adaptive_trailers ↴
dash_av1 380/317/f048d2969ab486ae10ea38790e41f676cf0ea1c9/1751245929/dash_av1.mpd
dash_h264 380/317/f048d2969ab486ae10ea38790e41f676cf0ea1c9/1751245929/dash_h264.mpd
hls_h264 380/317/f048d2969ab486ae10ea38790e41f676cf0ea1c9/1751245929/hls_264_master.m3u8
all_ages true
timestamp 4 December 2017 – 18:12:48 UTC

Depots

ID Configuration Size DL.
221 Shared InstallDepot from 220Half-Life 2 Base No size
222 Windows Shared InstallDepot from 220Half-Life 2 Windows client No size
223 macOS Shared InstallDepot from 220Half-Life 2 OSX client No size
224 Linux Shared InstallDepot from 220Half-Life 2 Linux client No size
225 Shared InstallDepot from 220RussianHalf-Life 2 Russian No size
226 Shared InstallDepot from 220Spanish - SpainHalf-Life 2 Spanish No size
227 Shared InstallDepot from 220FrenchHalf-Life 2 French No size
228 Shared InstallDepot from 220GermanHalf-Life 2 German No size
229 Shared InstallDepot from 220KoreanHalf-Life 2 Korean No size
230 Shared InstallDepot from 220Traditional ChineseHalf-Life 2 TChinese No size
231 Shared InstallDepot from 220Simplified ChineseHalf-Life 2 SChinese No size
232 Shared InstallDepot from 220ItalianHalf-Life 2 Italian No size
389 Half-Life 2 Episode 1 Base 1.05 GiB 722.01 MiB
380 Half-Life 2 Episode 1 594.55 MiB 271.30 MiB
381 FrenchHalf-Life 2 Episode 1 French 502.30 MiB 370.15 MiB
382 GermanHalf-Life 2 Episode 1 German 502.60 MiB 411.86 MiB
383 RussianHalf-Life 2 Episode 1 Russian 528.16 MiB 480.58 MiB
384 Spanish - SpainHalf-Life 2 Episode 1 Spanish 502.43 MiB 386.44 MiB
385 KoreanHalf-Life 2 Episode 1 Korean 506.40 MiB 398.97 MiB
386 Traditional ChineseHalf-Life 2 Episode 1 TChinese 491.71 MiB 377.76 MiB
387 Simplified ChineseHalf-Life 2 Episode 1 SChinese 507.33 MiB 390.53 MiB
388 ItalianHalf-Life 2 Episode 1 Italian 502.83 MiB 392.13 MiB

Total size on disk is 5.58 GiB and total download size is 4.10 GiB.

Total size on disk is 1.63 GiB and total download size is 993.30 MiB, when filtered to Windows, English, no DLC depots.

Branches

Name Description Build ID Time Built Time Updated
public 17324704 11 February 2025 – 17:14:23 UTC 11 February 2025 – 18:43:14 UTC
beta Beta updates 16557527 27 November 2024 – 20:22:16 UTC 28 November 2024 – 15:39:21 UTC
previous The previous public build 16436854 17 November 2024 – 16:58:47 UTC 28 November 2024 – 15:39:59 UTC
steam_legacy Pre-20th Anniversary Build 12694560 14 November 2023 – 01:10:42 UTC 15 November 2024 – 22:02:43 UTC

Other

Name Value
overridescddb 1
markdlcdepots 1
hasdepotsindlc 1
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